JP4654966B2 - Air cleaner mounting structure - Google Patents

Description

  The present invention relates to an air cleaner mounting structure mounted on an air cleaner mounting portion in an engine room of a vehicle.

As an air cleaner mounting structure mounted on an air cleaner mounting portion in an engine room of an automobile, one disclosed in Patent Document 1 has been proposed. In this mounting structure, an elastic body is fitted into each of a plurality of holes formed in the bottom wall of the upstream divided casing located on the lower side among the upstream and downstream divided casings constituting the air cleaner, and the upstream side Bolts pass through the center holes of the elastic bodies from the inside of the split casing. Then, each of the bolts is passed through a hole formed in the bracket, and a nut is screwed onto a lower end portion of each bolt on the back side of the bracket so that the upstream divided casing is fixed to the bracket. It has become.
Utility Model Registration Gazette No. 2580158

  However, the conventional air cleaner mounting structure has the following problems. That is, the work of exchanging or inspecting the filter element accommodated in the air cleaner is performed by opening the downstream divided casing located on the upper side from the upstream divided casing. Since the duct of the air cleaner of Patent Document 1 is connected to the downstream divided casing, the downstream divided casing cannot be moved greatly open, and the opening angle is limited. In addition, since there is almost no extra space in the engine room of automobiles in recent years, there are severe restrictions on mounting various parts, and a sufficient gap is not secured between the air cleaner and peripheral parts. For this reason, it is difficult to visually confirm the mounting state of the filter element from the outside, and since the opening angle is limited, it is inevitable that the attaching / detaching direction of the filter element becomes the lateral direction. Therefore, not only the removal / attachment operation of the filter element becomes very troublesome, but also the filter element may come into contact with other peripheral devices and the filter element may be soiled.

  An object of the present invention is to provide an air cleaner mounting structure that solves the above-described conventional problems, can easily perform the attaching / detaching operation of the filter element, and can reduce the risk of the filter element being soiled. is there.

In order to solve the above problems, the invention according to claim 1 is characterized in that an upper case is rotatably attached to a lower case that houses a filter element, an air inlet is provided in the lower case, and the upper case is provided. An air cleaner mounting structure in which an air cleaner provided with a lead-out port for supplying air to an intake side of an engine is attached to an air cleaner mounting portion in an engine room of a vehicle via a connecting means. In the state assembled to the air cleaner mounting portion, the connecting means is configured to allow the air cleaner to float , and the connecting means includes one end portion of the bottom wall of the lower case of the air cleaner, a hinge mechanism provided between the air cleaner mounting portion, to become more a holding mechanism for holding in a non-floating position air cleaner The gist.

According to a second aspect of the present invention, in the first aspect , the hinge mechanism is provided in a plurality of arc-shaped hinge engagement holes provided in the air cleaner mounting portion and a bottom wall of a lower case of the air cleaner. And an arc-shaped hinge pin engaged with each of the hinge engaging holes, and the air cleaner is tilted to the floating position along the hinge engaging hole and the arc of the hinge pin. Is the gist.

According to a third aspect of the present invention, in the first or second aspect , the holding mechanism is attached to the air cleaner mounting portion and has an engagement hole, and is attached to the lower case, and the grommet The gist is that it is constituted by a locking pin that is detachably locked in the engaging hole.

  According to the present invention, since the lower case of the air cleaner can be lifted from the assembly position by manual operation, a wide space is secured to detach the filter element in a state where the upper case is rotated and opened, The filter element can be easily taken out and stored from the lower case, and the filter element can be easily attached and detached. Further, it is possible to reduce the possibility that the filter element will be contaminated by hitting other peripheral devices.

Hereinafter, an embodiment of an air cleaner mounting structure embodying the present invention will be described with reference to FIGS.
As shown in FIG. 1, an air cleaner mounting substrate 12 as an air cleaner mounting portion is attached to a predetermined position of a vehicle body frame 11 in an engine room of an automobile by welding or the like. The air cleaner 13 attached to the mounting substrate 12 includes a lower case 14 and an upper case 16 connected to one side of the upper end opening edge of the lower case 14 via a plurality of hinges 15 so as to be opened and closed in a vertical direction. I have. A filter element 17 is accommodated in the inner upper portion of the lower case 14. Air is introduced from an intake port 18 of the lower case 14 into an upstream air intake chamber formed at the lower portion of the filter element 17. Then, the air in the air suction chamber is filtered by the filter element, led out to the air discharge chamber of the upper case 16 above the filter element 17, and connected to the outlet port 19 and the outlet port 19 of the upper case 16. The air is supplied from a duct (not shown) to the intake side (carburetor) of the engine.

  A clamp fitting 21 is attached to one side of the opening edge of the lower and upper cases 14 and 16 opposite to the hinge 15. By releasing the clamp state of the clamp fitting 21 by manual operation, the upper case 16 can be rotated upward about the hinge 15 so that the filter element 17 can be attached and detached.

Next, the mounting structure of the air cleaner 13 to the mounting substrate 12 will be described.
The mounting board 12 is formed with mounting holes 12a (see FIGS. 3 to 5) at three locations so as to be located at the vertices of an isosceles triangle, and two adjacent mounting holes 12a on the bottom side of the triangle are provided with rubber. Two first grommets 31 made of such an elastic material are attached, and a second grommet 32 is attached to the remaining one of the attachment holes 12a. A pair of arcuate hinge pins 33 are connected to one end of the bottom wall of the lower case 14 by welding, and both the hinge pins 33 are engaged with arcuate engagement holes 31 a of the first grommets 31. It is like that. A locking pin 34 is attached downward to the bottom wall of the lower case 14 by welding or the like, and the locking pin 34 is engaged with an engagement hole 32 a of the second grommet 32. . An approximately abacus spherical locking portion 34 a is formed at the tip of the locking pin 34, and the diameter of the locking portion 34 a is larger than the diameter of the locking pin 34. Then, as shown in FIG. 5, the engaging portion 34a of the engaging pin 34 is forcibly expanded from the upper side into the engaging hole 32a of the second grommet 32, and the engaging portion 32a is inserted. In the state where 34a is locked to the lower end edge of the second grommet 32, the locking pin 34 is prevented from being pulled out from the engagement hole 32a even when vehicle vibration occurs due to vehicle running or the like. Further, when one end side of the lower case 14 is artificially strongly pulled up, the locking portion 34a of the locking pin 34 is separated upward from the engagement hole 32a.

  In this embodiment, the first and second grommets 31, 32, the hinge pins 33, the locking pins 34, and the like constitute connection means for connecting the air cleaner 13 to the mounting substrate 12.

Next, a method for assembling the air cleaner 13 configured as described above will be described.
First, as shown in FIG. 2, the hinge pin 33 attached to the lower case 14 of the air cleaner 13 with the air cleaner 13 inclined with respect to the engagement hole 31a of the first grommet 31 on the mounting substrate 12 side is shown in FIG. Insert as shown.

  Next, in FIG. 2, the air cleaner 13 in an inclined state is rotated downward as indicated by an arrow about the hinge pin 33, and the tip of the locking pin 34 is moved to the second grommet 32 as shown in FIG. Insert into the engagement hole 32a. At the time of this insertion, as described above, the engaging hole 32a of the second grommet 32 made of an elastic material is expanded by the locking portion 34a. In the state where the air cleaner 13 is horizontally supported on the upper surface of the mounting board 12 as shown in FIG. 6, the hinge pin 33 is penetrated and locked into the engagement hole 31a of the first grommet 31 as shown in FIG. The locking portion 34 a is locked to the lower surface of the second grommet 32.

In this state, even if the automobile vibrates, the hinge pin 33 and the locking pin 34 do not come out of the engagement holes 31a and 32a, and the air cleaner 13 is held at the assembly position.
Next, an operation for detaching the filter element 17 accommodated in the air cleaner 13 will be described.

  In FIG. 6, this replacement operation is performed as follows while an elastically deformable duct for supplying air to the intake side of the engine (not shown) is connected to the outlet 19. If the one end side of the air cleaner 13, that is, the locking pin 34 side is pulled up manually, the air cleaner 13 is tilted upward along the arc of the engagement hole 31 a and the hinge pin 33. Then, as shown in FIG. 7, if the locking pin 34 of the air cleaner 13 is separated from the engaging hole 32a of the second grommet 32, the air cleaner 13 is levitated in an inclined state. Further, the clamped state of the clamp fitting 21 is released, and the upper case 16 is rotated around the hinge 15 to release the upper case 16 from the lower case 14. In this state, the filter element 17 is taken out from the lower case 14, and inspection work such as cleaning is performed.

  The filter element 17 that has been inspected or the new filter element 17 is accommodated in the lower case 14 with the lower case 14 tilted upward and the upper case 16 opened as shown in FIG. . Next, the upper case 16 is rotated to the lower case 14 side, the clamp fitting 21 is switched to the clamped state, and both cases 14 and 16 are joined. Further, the air cleaner 13 is rotated from the inclined floating position to a horizontal position as shown in FIG. 6, and the locking pin 34 is inserted and locked into the engagement hole 32 a of the second grommet 32, thereby the filter element 17. This completes the inspection or replacement work.

According to the air cleaner mounting structure of the above embodiment, the following effects can be obtained.
(1) In the above embodiment, the air cleaner 13 is tiltably mounted on the mounting substrate 12 by the hinge mechanism including the first grommet 31 and the hinge pin 33, and the locking pin 34 attached to the lower case 14 is attached to the second grommet 32. The engagement hole 32a is detachably locked by manual operation. For this reason, when the filter element 17 is inspected or replaced, the air cleaner 13 is levitated so that the filter element 17 can be opened and removed by opening the upper case 16 upward. Therefore, as shown in FIG. 7, even if the opening angle of the upper case 16 is restricted, the mounting portion of the filter element 17 of the air cleaner 13 can be visually confirmed. Moreover, since the filter element 17 of the air cleaner 13 is attached / detached obliquely from above, even if the space in the engine room is limited, the insertion / extraction of the filter element 17 is not so disturbed by other peripheral devices. Therefore, the filter element 17 can be easily attached and detached, and the risk of the filter element 17 being contaminated by hitting other peripheral devices can be reduced.

  (2) In the above embodiment, the locking portion 34a of the locking pin 34 is penetrated from the engagement hole 32a of the second grommet 32, and the locking portion 34a is locked to the lower surface of the second grommet 32. Even if the vehicle vibrates, the locking pin 34 does not come off the engaging hole 32a.

  (3) In the above embodiment, the lower case 14 can be turned upward by using the arc of the engagement hole 31a and the hinge pin 33 only by pulling up the air cleaner 13 by manual operation. The filter element 17 can be easily attached and detached.

  (4) In the above embodiment, the arcuate hinge pin 33 is inserted into the arcuate engagement hole 31 a of the first grommet 31 and the locking pin 34 is inserted into the engagement hole 32 a of the second grommet 32. did. For this reason, the mounting operation of the air cleaner 13 on the vehicle can be easily performed manually without using a tool.

Next, a reference example of the present invention will be described with reference to FIG.
In this reference example , the guide pins 35 connected to the bottom wall of the lower case 14 pass through the engagement holes 32a of a plurality of (for example, 3 or 4) grommets 32, and the length dimension of each guide pin 35 is set to It is set longer than the locking pin 34 of the embodiment. Then, the air cleaner 13 is lifted from the assembly position to the floating position while being in a horizontal state. Further, at the tip of each guide pin 35, when the air cleaner 13 is moved to the floating position, the guide pin 35 is prevented from being unintentionally removed from the engaging hole 32a of the grommet 32. A portion 35a is formed. Further, in order to prevent the air cleaner 13 from floating from the mounting board 12 due to vehicle vibration or the like in a state where the air cleaner 13 is moved to the assembly position, a locking portion 35b serving as a locking means with respect to the outer peripheral surface of the guide pin 35. Are integrally formed, and the locking portion 35 b is locked to the lower surface of the second grommet 32.

  FIG. 8 shows a state in which the air cleaner 13 is held at the assembly position. In this state, when the air cleaner 13 is manually lifted, the locking portion 35b is moved upward while expanding the diameter of the engaging hole 32a against its elastic force, and the retaining portion 35a is engaged with the lower surface of the second grommet 32. When stopped, the air cleaner 13 is switched to the floating position. In this state, the guide pin 35 is brought into frictional contact with the engagement hole 32a, so that it is maintained even if the hand is released from the air cleaner 13.

In this mounting structure of the air cleaner 13 of the reference example, since the air cleaner 13 is lifted while the horizontal state, can be applied Oite to the layout of the peripheral devices in it is difficult engine that tilting the lower case 14. Other effects are the same as those of the above-described embodiment.

In addition, you may change the said embodiment as follows.
As shown in FIG. 9, instead of the hinge pin 33, a hinge pin 33 having a spherical portion 33a may be used.

  As shown in FIG. 10, the attachment pin 41 is fixed to the lower surface of the bottom wall of the lower case 14, and the sleeve 42 having the spherical portion 42a is fitted to the outer peripheral surface thereof to constitute the hinge pin 43. Good.

-Instead of the said 1st grommet 31 and the hinge pin 33, you may use the hinge which consists of a pair of hinge board and the hinge axis | shaft which connects both hinge boards.
The first and second grommets 31 and 32 may be provided on the bottom surface of the lower case 14, and the hinge pins 33 and the locking pins 34 may be provided on the mounting substrate 12.

The perspective view of the separation state of the air cleaner which shows one Embodiment which actualized the attachment structure of the air cleaner of this invention. The perspective view for demonstrating the method of attaching an air cleaner with respect to an attachment board | substrate. The expanded sectional view of a hinge mechanism. The expanded sectional view of the hinge mechanism which shows the state which attached the air cleaner to the attachment board | substrate. The expanded sectional view of the vicinity of the locking pin which shows the state which attached the air cleaner to the attachment board | substrate. The perspective view which shows the state which has an air cleaner in a regular assembly position. The perspective view for demonstrating the check operation | work of the filter element of an air cleaner. Sectional drawing of the attachment state of the air cleaner which shows the reference example of this invention. The longitudinal cross-sectional view which shows another embodiment of a hinge mechanism. The longitudinal cross-sectional view which shows another embodiment of a hinge mechanism.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 13 ... Air cleaner, 14 ... Lower case, 16 ... Upper case, 18 ... Inlet port, 19 ... Outlet port, 31a, 32a ... Engagement hole, 32 ... Grommet, 33, 43 ... Hinge pin, 34 ... Locking pin, 34a, 35b ... locking portion, 35 ... guide pin, 35a ... retaining portion.

Claims (3)

The upper case is rotatably mounted on the lower case that houses the filter element, the lower case is provided with an air inlet, and the upper case is provided with an outlet for supplying air to the intake side of the engine. In the air cleaner mounting structure in which the air cleaner is mounted to the air cleaner mounting portion in the engine room of the vehicle via the connecting means.
In the state where the air cleaner is assembled to the air cleaner mounting portion, the connecting means is configured to allow the air cleaner to float .
The connecting means includes a hinge mechanism provided between one end portion of the bottom wall of the lower case of the air cleaner and the air cleaner mounting portion, and a holding mechanism that holds the air cleaner in a non-floating position. Air cleaner mounting structure. 2. The hinge mechanism according to claim 1 , wherein the hinge mechanism is provided in a plurality of arc-shaped hinge engagement holes provided in the air cleaner mounting portion, a bottom wall of a lower case of the air cleaner, and the hinge engagements. An air cleaner mounting structure comprising an arcuate hinge pin engaged with each of the holes, wherein the air cleaner is tilted to a floating position along the arc of the hinge pin and the hinge pin arc. 3. The holding mechanism according to claim 1 , wherein the holding mechanism is attached to the air cleaner mounting portion and has an engagement hole, and is attached to the lower case and is detachably locked to the engagement hole of the grommet. A structure for mounting an air cleaner, characterized in that it is constituted by a locking pin .

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